i also just finished watching the anime for the first time. honestly i can't believe i missed out such a gem, it is amazing! and i also agree with your opinion about the doujinshi - it feels like a part of the series, doesn't it? :D
it really does >////< it's like this doujin is the most likely to happen if the marriage will really happen in the anime ლ(´ڡ`ლ)
it IS amazing! one of the animes that gave post-anime-depression. in just 12 episodes I fell in love with every single character. Sadly, there was never seconds season announced, just a movie
im fcking crying T__T i just finished watching the anime and finding this dj is a blessing >< it feels like this is the true ending